GB383981A - Improvements relating to thermionic valve oscillators - Google Patents
Improvements relating to thermionic valve oscillatorsInfo
- Publication number
- GB383981A GB383981A GB21242/31A GB2124231A GB383981A GB 383981 A GB383981 A GB 383981A GB 21242/31 A GB21242/31 A GB 21242/31A GB 2124231 A GB2124231 A GB 2124231A GB 383981 A GB383981 A GB 383981A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- voltage
- alteration
- frequency
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/02—Details
- H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- X-Ray Techniques (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
383,981. Valve generating circuits. WIRED RADIO, Inc., 60, Broadway, New York, U.S.A.-(Assignees of Dow, J. B. ; 37, Oakridge Boulevard, Oakcrest, Alexandria, Virginia, U.S.A.) July 24, 1931, No. 21242. Convention date, April 22. [Class 40 (v).] The frequency of a valve oscillator is kept constant, despite changes in anode voltage, by providing an auxiliary anode and applying to it a voltage proportional to that of the main anode, whereby any frequency change due to alteration of anode voltage is counterbalanced by a frequency change of equal amount but of opposite sense due to alteration of the auxiliary anode voltage. In the example shown, the tuned circuit 5 is kept in oscillation by connecting its opposite sides to the grid 2 and the anode 3, the intermediate plate of the double condenser 6 being connected to the cathode. The voltages of the anode 3 and the auxiliary anode 4 are derived from tappings on potentiometer 13 through resistances 14, 15. The auxiliary anode is connected to the control grid 2 by a variable condenser 10. The tappings 18, 19 are adjusted by experiment to positions in which an alteration of the supply voltage 12 does not affect the frequency.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US532056A US1943302A (en) | 1931-04-22 | 1931-04-22 | Oscillator system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB383981A true GB383981A (en) | 1932-12-01 |
Family
ID=24120203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21242/31A Expired GB383981A (en) | 1931-04-22 | 1931-07-24 | Improvements relating to thermionic valve oscillators |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US1943302A (en) |
| DE (1) | DE637985C (en) |
| FR (1) | FR723546A (en) |
| GB (1) | GB383981A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2573742A (en) * | 1940-12-31 | 1951-11-06 | Toth Emerick | Oscillator frequency control |
| US2539826A (en) * | 1945-07-30 | 1951-01-30 | Thomas J George | Electronic musical instrument |
| US2484562A (en) * | 1945-12-04 | 1949-10-11 | Gen Electric | Compensated oscillator system |
| US2492767A (en) * | 1947-11-12 | 1949-12-27 | Gen Electric | Oscillator |
-
0
- US US20293D patent/USRE20293E/en not_active Expired
-
1931
- 1931-04-22 US US532056A patent/US1943302A/en not_active Expired - Lifetime
- 1931-07-24 GB GB21242/31A patent/GB383981A/en not_active Expired
- 1931-07-31 FR FR723546D patent/FR723546A/en not_active Expired
- 1931-09-05 DE DEW86927D patent/DE637985C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1943302A (en) | 1934-01-16 |
| DE637985C (en) | 1936-11-07 |
| USRE20293E (en) | 1937-03-16 |
| FR723546A (en) | 1932-04-11 |
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